This partial specialization manages a trivially destructible value_type in Optional_Base. It does not have a user-provided destructor, which makes it is_trivially_destructible itself.
Declared in <bslstl_optional.h>
template<class t_TYPE>
struct Optional_Data<t_TYPE, true>
: Optional_DataImp<t_TYPE>| Name | Description |
|---|---|
Optional_DataImp<t_TYPE> | This component-private struct manages a value_type object in an Optional_Base object. This class provides an abstraction for const value type. An Optional_Base object may contain an object of const type. An assignment to such an Optional_Base object should not succeed. However, unless the Optional_Base object itself is const, it should be possible to change the value of the Optional_Base object using emplace. In order to allow for that, this class manages a non-const object of value_type, but all the accessors return a const adjusted reference to the managed object. |
| Name | Description |
|---|---|
emplace | emplace overloads |
hasValue | Return true if this objects has a value, and false otherwise. |
reset | Destroy the value_type object in d_buffer, if any. |
value | value overloads |
operator BloombergLP::bslmf::NestedTraitDeclaration<Optional_Data, IsBitwiseCopyable, bslmf::IsBitwiseCopyable<t_TYPE>::value> |
| Name |
|---|
Unnamed using |